Update README.md
Update README.md
Merge pull request #1 from casarotti/master

update readme.md in geocubit
Add .gitignore files.
Remove git-svn docs now that we're purely git.
Merge pull request #3 from QuLogic/git-transition

Finish git transition.
Merge pull request #70 from geodynamics/master

Catching up master branch for QA branch